Self-piercing riveting device, control method of a self-piercing riveting device and related apparatus

Abstract

This application relates to the technical field of self-piercing riveting, and more specifically, to a self-piercing riveting device, a control method for the self-piercing riveting device, and related equipment. The self-piercing riveting device includes a first stamping part, a second stamping part, and a pressure sensor. The first stamping part pushes the tail of the rivet to apply pressure to the rivet, causing it to penetrate the multi-layered sheet metal. The pressure sensor detects the pressure applied to the rivet by the first stamping part. When a sudden change in pressure is detected, it indicates that the rivet has penetrated all the sheet metal. The second stamping part applies pressure to the tip of the rivet, causing it to deform and form a flange that abuts against the sheet metal. This ensures that the rivet completely penetrates all the sheet metal while preventing it from coming out, reducing the risk of loosening of the sheet metal during subsequent use. Furthermore, the riveting status can be detected without destructive testing, reducing testing costs and improving the efficiency of self-piercing riveting.

Description

Technical Field

[0001] This application relates to the technical field of self-piercing riveting, and more specifically, to a self-piercing riveting device, a control method for the self-piercing riveting device, and related equipment. Background Technology

[0002] The new energy vehicle industry is booming, but poor driving range remains a major problem. One key solution is to use more lightweight metals and non-metals in the vehicle body, such as aluminum alloys, magnesium alloys, and reinforced plastics, to reduce energy consumption. Self-piercing riveting, an advanced cold-joining technology, offers a shorter production cycle and simpler process compared to traditional welding and screw / nut connections. It is now widely used for joining lightweight metals and non-metals in automotive bodies.

[0003] However, currently, if the rivets in self-piercing riveting cannot completely penetrate all the plates, the connection strength of the plates will be insufficient, and there is a risk of loosening during subsequent use. Furthermore, it is difficult to detect and assess when the rivets penetrate the plates, and destructive testing is usually required to find out, which affects the efficiency of self-piercing riveting and results in high testing costs.

[0004] Therefore, it is necessary to propose a self-piercing riveting device, a control method for the self-piercing riveting device, and related equipment to at least partially solve the problems existing in the prior art. Summary of the Invention

[0005] The summary section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. The summary section of this invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0007] Therefore, a first aspect of the present invention provides a self-piercing riveting device.

[0008] A second aspect of the present invention provides a control method for a self-piercing riveting device for controlling the aforementioned thermal management system.

[0009] A third aspect of the present invention provides an electronic device.

[0010] A fourth aspect of the present invention provides a computer-readable storage medium.

[0011] In view of this, a self-piercing riveting device is provided according to a first aspect of the embodiments of this application, comprising:

[0012] The first stamping section is used to push the rivet through the sheet metal;

[0013] The second stamping part is used to abut against the sheet metal;

[0014] A pressure sensor is connected to the first stamping part and is used to detect the pressure of the first stamping part;

[0015] When the pressure sensor detects a sudden change in pressure at the first stamping part, the second stamping part presses against the tip of the rivet to form a flange at the tip of the rivet.

[0016] In one feasible implementation, the second stamping portion includes:

[0017] A support plate is provided to support the plate material, and the support plate has connecting holes.

[0018] A support rod is disposed in the connecting hole. The support rod and the support plate are at the same height on the side near the first stamping part. An annular groove is formed between the support rod and the hole wall of the connecting hole. When the rivet penetrates the plate, the rivet is located in the annular groove.

[0019] A sleeve is fitted onto the support rod and is located between the support rod and the wall of the connecting hole.

[0020] In one feasible implementation, a groove is provided on the side of the sleeve away from the first stamping part;

[0021] The support rod has a protrusion on the side away from the first stamping part, and the protrusion is inserted into the groove.

[0022] The groove depth is greater than the length of the protrusion.

[0023] In one feasible implementation, the self-piercing riveting device further includes:

[0024] A first driving member is connected to the first stamping part and is used to drive the first stamping part to stamp the rivet.

[0025] The second driving component is connected to one end of the sleeve where the groove is located, and is used to drive the sleeve to move toward the support plate.

[0026] In one feasible embodiment, the self-piercing riveting device further includes:

[0027] A first displacement sensor is connected to the side wall of the first stamping part;

[0028] The second displacement sensor is connected to the side wall of the sleeve.

[0029] In one feasible implementation, the pressure sensor is located at one end of the first stamping section for abutting against the rivet.

[0030] According to a second aspect of the embodiments of this application, a control method for a self-piercing riveting device is provided, for controlling the self-piercing riveting device as described in any of the above technical solutions, comprising:

[0031] Control the first stamping part to stamp the rivet, and obtain the pressure information of the first stamping part;

[0032] Based on the pressure information of the first stamping part, the position information of the rivet relative to the plate is determined;

[0033] When the rivet penetrates the sheet metal, the second stamping part is controlled to stamp the tip of the rivet so that the tip of the rivet forms a flange.

[0034] In one feasible implementation, a pressure-time curve of the first stamping part is plotted based on the pressure information of the first stamping part;

[0035] Based on the distribution of the pressure-time curve, the position information of the rivet relative to the plate is determined;

[0036] Specifically, when the pressure-time curve reaches an inflection point, it is determined that the rivet has penetrated the plate.

[0037] According to a fourth aspect of the embodiments of this application, an electronic device is provided, the electronic device including at least one processor and at least one memory connected to the processor; wherein, the processor is used to call program instructions in the memory to execute the control method of the self-piercing riveting device as described in the above technical solution.

[0038] According to a fourth aspect of the embodiments of this application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein, when the program is executed by a processor, it implements the control method of the self-piercing riveting device as described in the above technical solutions.

[0039] Compared with the prior art, the present invention has at least the following beneficial effects: The self-piercing riveting device provided in the embodiments of this application is provided with a first stamping part, a second stamping part, and a pressure sensor. The first stamping part is used to push the tail of the rivet to apply pressure to the rivet so that the rivet penetrates into the multi-layer plate. The pressure sensor detects the pressure information applied to the rivet by the first stamping part in real time. When a sudden change in pressure is detected in the first stamping part, it indicates that the rivet has penetrated all the plates. At this time, the second stamping part applies pressure to the tip of the rivet so that the tip of the rivet that has penetrated the plate is deformed by force to form a flange. The flange abuts against the plate, ensuring that the rivet completely penetrates all the plates while the connection with the plate is tight, preventing the rivet from coming out of the plate, reducing the risk of loosening of the plate during subsequent use, and the riveting status of the rivet can be detected without destructive testing, reducing testing costs and improving the efficiency of self-piercing riveting.

[0040] The self-piercing riveting device, the control method for the self-piercing riveting device, and related equipment of the present invention, as well as other advantages, objectives, and features of the present invention, will be partly apparent from the following description and partly understood by those skilled in the art through study and practice of the present invention. Attached Figure Description

[0041] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit this specification. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0042] Figure 1 A schematic structural diagram of a self-piercing riveting device provided in an embodiment of this application;

[0043] Figure 2 A schematic structural diagram of a second stamping part provided in an embodiment of this application;

[0044] Figure 3 This is a schematic diagram of a rivet flange structure provided in an embodiment of this application;

[0045] Figure 4 A schematic flowchart illustrating a control method for a self-piercing riveting device provided in an embodiment of this application;

[0046] Figure 5 A schematic diagram of a pressure-time curve provided in an embodiment of this application;

[0047] Figure 6 This is a schematic structural frame of an electronic device provided in an embodiment of this application.

[0048] in, Figures 1 to 6The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0049] 110 First stamping part, 120 Second stamping part, 121 Support plate, 122 Support rod, 123 Sleeve, 124 Connecting hole, 125 Protrusion, 126 Groove, 130 Pressure sensor, 140 First displacement sensor, 150 Second displacement sensor, 200 Sheet metal, 300 Rivet. Detailed Implementation

[0050] To better understand the above technical solutions, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0051] like Figures 1 to 3 As shown, a self-piercing riveting device is provided according to a first aspect of the present application, comprising: a first stamping part 110 for pushing a rivet 300 through a plate 200; a second stamping part 120 for abutting against the plate 200; and a pressure sensor 130 connected to the first stamping part 110 for detecting the pressure of the first stamping part 110; wherein, when the pressure sensor 130 detects a sudden change in the pressure of the first stamping part 110, the second stamping part 120 stamps the tip of the rivet 300 to form a flange at the tip of the rivet 300.

[0052] It is understood that the self-piercing riveting device provided in this application embodiment is provided with a first stamping part 110, a second stamping part 120, and a pressure sensor 130. The first stamping part 110 is used to push the tail of the rivet 300 to apply pressure to the rivet 300 so that the rivet 300 penetrates into the multilayer sheet 200. The pressure sensor 130 detects the pressure information applied to the rivet 300 by the first stamping part 110 in real time. When a sudden change in pressure is detected in the first stamping part 110, it indicates that the rivet 300 has penetrated all the sheets 200. At this time, the second stamping part 120 applies pressure to the tip of the rivet 300, so that the tip of the rivet 300 that penetrates the plate 200 is deformed by force to form a flange. The flange abuts against the plate 200, ensuring that the rivet 300 completely penetrates the entire plate 200 while the connection with the plate 200 is tight, preventing the rivet 300 from coming out of the plate 200, reducing the risk of the plate 200 loosening during subsequent use, and the riveting status of the rivet 300 can be detected without destructive testing, reducing testing costs and improving the efficiency of self-piercing riveting.

[0053] Understandably, the second stamping part 120 provides support for the sheet metal 200, and there should be a gap between the corresponding positions of the second stamping part 120 and the rivet 300 to ensure that a sudden pressure change occurs when the rivet 300 penetrates all the sheet metal 200, so as to accurately monitor the penetration status of the rivet 300. When the second stamping part 120 applies pressure to the tip of the rivet 300, the gap can be sealed to ensure that the end of the second stamping part 120 and the tip of the rivet 300 in contact is flat, so that the second stamping part 120 applies pressure to the tip of the rivet 300.

[0054] In some examples, such as Figures 1 to 3 As shown, the second stamping part 120 includes: a support plate 121 for supporting the plate 200, the support plate 121 having a connecting hole 124; a support rod 122 disposed in the connecting hole 124, the support rod 122 and the support plate 121 being at the same height on the side near the first stamping part 110, an annular groove being formed between the hole walls of the support hole and the connecting hole 124, the rivet 300 being located in the annular groove when the rivet 300 penetrates the plate 200; and a sleeve 123 sleeved on the support rod 122, located between the support rod 122 and the hole wall of the connecting hole 124.

[0055] Understandably, the second stamping section 120 is provided with a support plate 121, a support rod 122, and a sleeve 123. The support plate 121 supports the plate 200. A connecting hole 124 is provided at the position corresponding to the rivet 300. The connecting hole 124 is a through hole. The support rod 122 is disposed in the connecting hole 124. The height of the support rod 122 is the same as the height of the side of the support plate 121 near the first stamping part 110, so that the support rod 122 and the end of the support plate 121 near the first stamping part 110 are flush, so that the support rod 122 provides support for the plate 200. The outer diameter of the support rod 122 is smaller than the inner diameter of the connecting hole 124, so that an annular groove is formed between the support rod 122 and the hole wall of the connecting hole 124. The first stamping part 110 stamps the rivet 300. When the rivet 300 penetrates the entire plate 200, the tip of the rivet 300 is located in the annular groove, so that the pressure sensor 130 detects the sudden change in pressure applied by the first stamping part 110. The riveting status of the rivet 300 can be detected without destructive testing, reducing the detection cost. The sleeve 123 is fitted onto the support rod 122 and can move along the axial direction of the support rod 122. The sleeve 123 is located between the support rod 122 and the wall of the connecting hole 124, that is, the sleeve 123 is located in the annular groove. When the second stamping part 120 is not applying pressure, the height of the sleeve 123 is lower than the height of the support rod 122 to leave space for the rivet 300. When it is detected that the tip of the rivet 300 has completely penetrated the plate 200 and is located in the annular groove, the sleeve 123 slides upward to apply pressure to the tip of the rivet 300, causing the tip of the rivet 300 to deform and form a flange. The flange abuts against the plate 200, ensuring that the rivet 300 completely penetrates the entire plate 200 while maintaining a tight connection with the plate 200, preventing the rivet 300 from coming out of the plate 200 and reducing the risk of loosening of the plate 200 during subsequent use.

[0056] In some examples, such as Figures 1 to 3 As shown, the sleeve 123 has a groove 126 on the side away from the first stamping part 110; the support rod 122 has a protrusion 125 on the side away from the first stamping part 110, and the protrusion 125 is inserted into the groove 126; wherein, the groove depth of the groove 126 is greater than the length of the protrusion 125.

[0057] Understandably, a groove 126 is provided on the side of the sleeve 123 away from the first stamping part 110, with the opening of the groove 126 facing downwards. A protrusion 125 is provided on the side of the support rod 122 away from the first stamping part 110. When the sleeve 123 is fitted onto the support rod 122, the protrusion 125 is located within the groove 126. Furthermore, the depth of the groove 126 is greater than the length of the protrusion 125. With this arrangement, when the second stamping part 120 is not applying pressure, the protrusion 125 abuts against the bottom of the groove 126, causing the support rod 122 to protrude beyond the sleeve 123. That is, the height of the support rod 122 is flush with the height of the support plate 121, and the height of the sleeve 123 is lower than the height of the support rod 122. Space is left in the annular groove so that the tip of the rivet 300 penetrates the entire plate 200 and is located within the annular groove. At this time, an upward thrust is applied to the sleeve 123, and the protrusion 125 slides from the bottom of the groove 126 towards the opening, thereby causing the sleeve 123 to move towards the plate 200. The sleeve 123 applies pressure to the tip of the rivet 300, causing the tip of the rivet 300 to deform and form a flange. The flange abuts against the plate 200, ensuring a tight connection between the rivet 300 and the plate 200 and preventing the rivet 300 from coming out of the plate 200. By setting the groove 126 and the protrusion 125, the movement of the sleeve 123 is limited to the axial direction of the support rod 122, and the travel of the sleeve 123 relative to the support rod 122 is limited, ensuring the stability of the pressure applied by the sleeve 123 to the tip of the rivet 300.

[0058] In some examples, the self-piercing riveting device further includes: a first driving member connected to the first stamping part 110 for driving the first stamping part 110 to stamp the rivet 300; and a second driving member connected to one end of the sleeve 123 where the groove 126 is provided for driving the sleeve 123 to move toward the support plate 121.

[0059] Understandably, the self-piercing riveting device also includes a first driving member and a second driving member. The first driving member is connected to the first stamping part 110 and provides thrust to the first stamping part 110, causing it to push the rivet 300 to rivet the plate 200. The second driving member is connected to the end of the sleeve 123 where the groove 126 is located. The second driving member provides thrust to the sleeve 123, causing it to move closer to the support plate 121, thereby applying pressure to the tip of the rivet 300 and causing the tip of the rivet 300 to form a flange. This reduces human intervention and increases the degree of automation.

[0060] In some examples, the self-piercing riveting device further includes: a first displacement sensor 140 connected to the side wall of the first stamping part 110; and a second displacement sensor 150 connected to the side wall of the sleeve 123.

[0061] Understandably, the self-piercing riveting device is also equipped with a first displacement sensor 140 and a second displacement sensor 150. The first displacement sensor 140 is connected to the side wall of the first stamping part 110 to detect the displacement of the first stamping part 110. Based on the length of the rivet 300, the thickness of the plate 200, and the displacement of the first stamping part 110, the position information of the rivet 300 relative to the plate 200 can be obtained to determine whether the rivet 300 has penetrated the entire plate 200. The second displacement sensor 150 is connected to the side wall of the sleeve 123 to detect the displacement of the sleeve 123. Based on the length of the rivet 300 tip protruding from the plate 200 and the displacement information of the sleeve 123, the flange condition of the rivet 300 tip can be determined, ensuring that the flange abuts against the plate 200. This ensures a tight connection between the rivet 300 and the plate 200, preventing the rivet 300 from coming out of the plate 200 and reducing the risk of loosening of the plate 200 during subsequent use. This improves the reliability of the self-piercing riveting.

[0062] In some examples, the pressure sensor 130 is located at one end of the first stamping portion 110 that abuts against the rivet 300.

[0063] Understandably, the pressure sensor 130 is located in the first stamping part 110 and is used to abut against one end of the rivet 300. That is, the pressure sensor 130 is located in the effective riveting area of ​​the first stamping part 110, ensuring the accuracy of the detected pressure information. This allows for precise determination of whether the rivet 300 has penetrated the entire sheet metal 200, improving reliability.

[0064] like Figure 4 As shown, a control method for a self-piercing riveting device is provided according to a second aspect of the embodiments of this application, for controlling the self-piercing riveting device as described in any of the above technical solutions, comprising:

[0065] S101: Control the first stamping part 110 to stamp the rivet 300, and obtain the pressure information of the first stamping part 110. It can be understood that during the self-piercing riveting process, the first stamping part 110 can be controlled to apply pressure to the tail end of the rivet 300, so that the rivet 300 penetrates into the plate 200. During this process, the pressure sensor 130 obtains the pressure information applied by the first stamping part 110 to the rivet 300.

[0066] S102: Based on the pressure information from the first stamping part 110, the position information of the rivet 300 relative to the sheet metal 200 is determined. It is understood that the position information of the rivet 300 within the sheet metal 200 can be determined based on the pressure information applied to the rivet 300 by the first stamping part 110. It is understood that during the riveting process, as the depth of the rivet 300 into the sheet metal 200 increases, the resistance encountered by the rivet 300 increases, and the first stamping part 110 needs to apply greater pressure to the rivet 300 to ensure smooth passage through the sheet metal 200. When the pressure information changes abruptly, it is determined that the rivet 300 has penetrated the entire sheet metal 200.

[0067] S103: When the rivet 300 penetrates the plate 200, the second stamping part 120 is controlled to stamp the tip of the rivet 300 to form a flange at the tip of the rivet 300. It is understood that when it is determined that the rivet 300 has penetrated the entire plate 200, the second stamping part 120 is controlled to move towards the plate 200 to apply pressure to the tip of the rivet 300, causing the tip of the rivet 300 to form a flange. The flange abuts against the plate 200, ensuring that the rivet 300 completely penetrates the entire plate 200 while maintaining a tight connection with the plate 200, preventing the rivet 300 from coming out of the plate 200, reducing the risk of loosening of the plate 200 during subsequent use, and allowing the riveting status of the rivet 300 to be detected without destructive testing, reducing testing costs and improving the efficiency of self-piercing riveting.

[0068] In some examples, such as Figure 5 As shown, the step of determining the position information of the rivet 300 relative to the plate 200 based on the pressure information of the first stamping part 110 includes: drawing a pressure-time curve of the first stamping part 110 based on the pressure information of the first stamping part 110; determining the position information of the rivet 300 relative to the plate 200 based on the distribution of the pressure-time curve; wherein, when the pressure-time curve shows an inflection point, it is determined that the rivet 300 penetrates the plate 200.

[0069] Understandably, after obtaining the pressure information of the first stamping part 110, a pressure-time curve of the first stamping part 110 can be plotted based on the pressure information. Since the pressure of the first stamping part 110 fluctuates during the riveting process, the fluctuation range of the pressure of the first stamping part 110 can be determined according to the ±3σ principle, thereby determining the minimum pressure-time curve and the maximum pressure-time curve. As long as the pressure of the first stamping part 110 is within the fluctuation range, the stability of the riveting process can be guaranteed. When the pressure-time curve shows an inflection point, that is, when the pressure drops instantaneously, it indicates that the rivet 300 has penetrated the entire sheet metal 200. The riveting status of the rivet 300 can be detected without destructive testing, reducing inspection costs and improving the efficiency of self-piercing riveting.

[0070] like Figure 6 As shown, according to a third aspect of the embodiments of this application, an electronic device 30 is provided. The electronic device includes at least one processor 301, and at least one memory 302 and a bus 303 connected to the processor. The processor 301 and the memory 302 communicate with each other through the bus 303. The processor 301 is used to call program instructions in the memory to execute the control method of the self-piercing riveting device in the above technical solution.

[0071] The smart electronic devices mentioned in this article can be PCs, tablets, mobile phones, etc.

[0072] According to a fourth aspect of the embodiments of this application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein, when the program is executed by a processor, it implements the control method of the self-piercing riveting device as described in the above technical solutions.

[0073] This application is described with reference to flowchart illustrations and / or block diagrams of methods, electronic devices (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable process management electronic device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable process management electronic device, generate instructions for implementing the process... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0074] In a typical configuration, an electronic device includes one or more processors (CPUs), memory, and a bus. The electronic device may also include input / output interfaces, network interfaces, etc.

[0075] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and memory includes at least one memory chip. Memory is an example of computer-readable media.

[0076] Computer-readable media, including both permanent and non-permanent, removable and non-removable media, can store information using any method or technology. Information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer-readable storage media for computers include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage electronic devices, or any other non-transferable medium that can be used to store information accessible to a computing electronic device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0077] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or electronic device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or electronic device. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or electronic device that includes that element.

[0078] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable, computer-readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0079] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A self-piercing riveting device, characterized in that, include: The first stamping section is used to push the rivet through the sheet metal; The second stamping part is used to abut against the sheet metal; A pressure sensor is connected to the first stamping part and is used to detect the pressure of the first stamping part; When the pressure sensor detects a sudden change in the pressure of the first stamping part, the second stamping part presses the tip of the rivet to form a flange at the tip of the rivet. The second stamping part includes: A support plate is provided to support the plate material, and the support plate has connecting holes. A support rod is disposed in the connecting hole. The support rod and the support plate are at the same height on the side near the first stamping part. An annular groove is formed between the support rod and the hole wall of the connecting hole. When the rivet penetrates the plate, the rivet is located in the annular groove. A sleeve is fitted onto the support rod and is located between the support rod and the wall of the connecting hole; The sleeve has a groove on the side away from the first stamping part; The support rod has a protrusion on the side away from the first stamping part, and the protrusion is inserted into the groove. Wherein, the groove depth is greater than the length of the protrusion; A first driving member is connected to the first stamping part and is used to drive the first stamping part to stamp the rivet. The second driving component is connected to one end of the sleeve where the groove is located, and is used to drive the sleeve to move toward the support plate.

2. The self-piercing riveting device according to claim 1, characterized in that, Also includes: A first displacement sensor is connected to the side wall of the first stamping part; The second displacement sensor is connected to the side wall of the sleeve.

3. The self-piercing riveting device according to claim 1, characterized in that, The pressure sensor is located in the first stamping section and is used to abut against one end of the rivet.

4. A control method for a self-piercing riveting device, used to control the self-piercing riveting device as described in any one of claims 1 to 3, characterized in that, include: Control the first stamping part to stamp the rivet, and obtain the pressure information of the first stamping part; Based on the pressure information of the first stamping part, the position information of the rivet relative to the sheet metal is determined; When the rivet penetrates the sheet metal, the second stamping part is controlled to stamp the tip of the rivet so that the tip of the rivet forms a flange.

5. The control method for the self-piercing riveting device according to claim 4, characterized in that, The step of determining the position information of the rivet relative to the sheet metal based on the pressure information of the first stamping part includes: The pressure-time curve of the first stamping section is plotted based on the pressure information of the first stamping section; Based on the distribution of the pressure-time curve, the position information of the rivet relative to the plate is determined; Specifically, when the pressure-time curve reaches an inflection point, it is determined that the rivet has penetrated the plate.

6. An electronic device, characterized in that, The electronic device includes at least one processor and at least one memory connected to the processor; wherein the processor is used to call program instructions in the memory to execute the control method of the self-piercing riveting device as described in claim 4 or 5.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed by a processor, it implements the control method of the self-piercing riveting device as described in claim 4 or 5.

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